@article{Sagnol2013, author = {Guillaume Sagnol}, title = {Approximation of a maximum-submodular-coverage problem involving spectral functions, with application to experimental designs}, journal = {Discrete Applied Mathematics}, volume = {161}, number = {1-2}, pages = {258 -- 276}, doi = {10.1016/j.dam.2012.07.016}, year = {2013}, }